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http://dx.doi.org/10.1016/S0016-7037(01)00853-5

has been cited by the following article:

• TITLE: Biosorptive Removal of Zinc from Aqueous Solution by Algerian Calotropis procera Roots

  AUTHORS: Bahia Meroufel, Mohamed Amine Zenasni, André Merlin, Béatrice George

  KEYWORDS: Calotropis procera, Zn(II), Adsorption Kinetics, Adsorption Isotherms

  JOURNAL NAME: Journal of Environmental Protection, Vol.6 No.7, July 28, 2015

  ABSTRACT: Potentially toxic trace elements, such as zinc, with high levels in water are very serious problems in many places around the world, sometimes in relation to natural sources and in other cases to anthropogenic ones. Adsorption process is among the most effective techniques for removing of many heavy metal ions from different types of water. In this study, an attempt has been made to investigate the efficiency of Calotropis procera roots (CP) in removing of Zn(II) from aqueous solution by using batch mode technique. During the removal process, the effects of solution pH, Zn concentrations and contact time on adsorption efficiency by CP roots were studied. Experimental equilibrium data were analyzed by the Langmuir and Freundlich isotherm models. The results showed that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacity of 9.69 mg/g. The biosorption of Zn(II) was a fast process and followed the pseudo-second-order kinetic.